Open-angle Glaucoma: A rather common type condition also referred to as wide-angle glaucoma. The drainage structure in your eye is called the trabecular meshwork and while it may look normal, but actually fluid doesn't flow out like it should.
Angle-closure Glaucoma: A relatively less common type also called Narrow-angle glaucoma. Here the eye doesn't drain right because the angle between your iris and cornea is too narrow. The iris is in the way which can lead to a build-up of pressure in a patient's eye. It is also linked to eye abnormalities including farsightedness and cataracts.
The cause of Glaucoma generally is a failure of the eye to maintain an appropriate balance between the amount of internal (intraocular) fluid produced and the amount that drains away. Glaucoma is the leading cause of irreversible blindness in the world. Ophthalmologists are split over the precise causes of glaucoma, but most cases are divided into two categories:
Key tests employed to diagnose glaucoma.
Two lead types of Glaucoma have different symptoms